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Table 1 Characteristics of the study group

From: Naturally acquired antibodies from Beninese infants promote Plasmodium falciparum merozoite-phagocytosis by human blood leukocytes: implications for control of asymptomatic malaria infections

Characteristics of the study group

CAIG group (n = 27)

IG group (n = 53)

NPfDG group (n = 23)

P-value

Symptomatic Pf infection (median Q1–Q3)

2 (0–4)

2 (1–3)

 

0.209a

Asymptomatic Pf infection (median Q1–Q3)

2.5 (1–4)

1 (0–1)

 

 < 0.001a

Mothers

 Number of infants. (Median Q1–Q3)

3 (1–4)

3 (2–5)

4 (2–6)

 0.386C

 Maternal age (median Q1–Q3)

26 (22–30)

27.5 (23–30)

31 (29–35)

 0.001C

 Number of antenatal visits (Median Q1–Q3)

3 (2–4)

3 (1–5)

5 (4–6)

0.005C

 Number of Preventive malaria treatment (median Q1–Q3)

1 (0–1)

1 (1–1)

1 (1–1)

0.514C

Infants

 Birth weight (Median Q1–Q3)

2901 (2702.5–3212.5)

2957.5 (2637.5–3162.5)

3175 (2860–3315)

0.086C

 Ethnic group (n. %):

   

0.121b

  Aïzo

17 (68)

42 (79)

15 (65)

  Fon

5 (20)

7 (13)

2 (7)

  Others

3 (12)

3 (8)

6 (28)

Bednet possession (Median Q1–Q3)

1 (0–1)

1 (0–1)

1 (1–1)

0.049C

HbS (n. %):

   

 < 0.001b

  AA

14 (56)

38 (81)

20 (87)

  AS

10 (40)

9 (19)

3 (13)

  SS

1 (4)

0 (0)

0 (0)

 Bednet use for infants (Median Q1–Q3)

 Score ranging from 1 (rare use) to 4 (frequent use)

4 (3–4)

4 (3–4)

3 (3– 4)

0.429C

  1. This table presents the groups of the study. CAIG is the group of infants able to control malaria asymptomatic infection, IG is the group of infants with symptomatic and/or asymptomatic infections but not able to control malaria asymptomatic infections and NPfDG is the group of infants for which Pf has not been detected by TBS examination during the survey
  2. aStatistical significance determined using Mann–Whitney U-test between IG and CAIG groups
  3. bStatistical significance determined by χ2 analysis
  4. CStatistical significance determined by Kruskal–Wallis test
  5. In bold: significant P value at the 0.05 threshold